Are you trying to say that uploading your presentations to such a site is dangerous, because they let you upload for free? And that the owners could pull the plug on the site if the server costs get too high?

Are you trying to say that uploading your presentations to such a site is dangerous, because they let you upload for free? And that the owners could pull the plug on the site if the server costs get too high?

Are you taking memes into account? It raises the equivalent price risk by quite a lot; almost enough to break the interchangeable flag market.